Como colocar para o label mostrar o nome do funcionário na tela de funcionário?

[JCSE]

To tentando criar um sistema que o funcionário entre na sua conta e mostre 2 botões para registrar clientes e para ver todos os clientes. Nessa tela que mostra os 2 botões eu quero que um label mostre o nome do funcionário que entrou, por exemplo: O funcionário coloca o login e senha na primeira tela, na segunda tela o label tem que mostrar qual o valor que o funcionário colocou no campo de texto “Usuario”.
Para o funcionário entrar na conta dele, ele precisa colocar “Usuário” e “Senha” o label da segunda tela precisa mostrar o nome do Usuário.
Acho que ficou meio confuso, mas espero que tenham entendido, obrigado

Código da Tela Inicial abaixo:

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
 */
package VIEW;

import DAO.CadastroDAO;
import DAO.ConexaoDAO;
import DTO.CadastroDTO;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JOptionPane;

/**
 *
 * author JC
 */
public class TelaInicialVIEW extends javax.swing.JFrame {

    /**
     * Creates new form TelaInicialVIEW
     */
    public TelaInicialVIEW() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        txtSenha = new javax.swing.JPasswordField();
        btEntrar = new javax.swing.JButton();
        txtUsuario = new javax.swing.JTextField();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBackground(new java.awt.Color(0, 204, 204));

        jLabel1.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
        jLabel1.setForeground(new java.awt.Color(255, 255, 153));
        jLabel1.setText("RadiantGems");

        jLabel2.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
        jLabel2.setForeground(new java.awt.Color(255, 255, 255));
        jLabel2.setText("Usuário");

        jLabel3.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
        jLabel3.setForeground(new java.awt.Color(255, 255, 255));
        jLabel3.setText("Senha");

        btEntrar.setFont(new java.awt.Font("Segoe UI", 0, 14)); // NOI18N
        btEntrar.setText("Entrar");
        btEntrar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btEntrarActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(137, 137, 137)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel1)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(jLabel2)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(btEntrar, javax.swing.GroupLayout.DEFAULT_SIZE, 90, Short.MAX_VALUE)
                            .addComponent(txtSenha)
                            .addComponent(txtUsuario))
                        .addComponent(jLabel3)))
                .addContainerGap(146, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(45, 45, 45)
                .addComponent(jLabel1)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jLabel2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(txtUsuario, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(17, 17, 17)
                .addComponent(jLabel3)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(txtSenha, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(btEntrar)
                .addContainerGap(38, Short.MAX_VALUE))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addContainerGap())
        );

        pack();
    }// </editor-fold>                        

    
    private void btEntrarActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        try {
            String login;
            String senha;
            login = txtUsuario.getText();
            senha = txtSenha.getText();
            
            CadastroDTO objcadastrodto = new CadastroDTO();
            objcadastrodto.setLogin(login);
            objcadastrodto.setSenha(senha);
            
            CadastroDAO objcadastrodao = new CadastroDAO();
            ResultSet rscadastrodao = objcadastrodao.FazerLogin(objcadastrodto);
            
            if (rscadastrodao.next()){
                TelaDeFuncionarioVIEW objteladefuncionario = new TelaDeFuncionarioVIEW();
                objteladefuncionario.setVisible(true);
                dispose();
            }else{
                JOptionPane.showMessageDialog(null, "Usuario ou Senha inválido");
            
            }
            
        } catch (SQLException erro) {
            JOptionPane.showMessageDialog(null,"TelaInicialVIEW" + erro);
        }
        
    }                                        

    
    /**
     * param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(TelaInicialVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TelaInicialVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TelaInicialVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TelaInicialVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TelaInicialVIEW().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton btEntrar;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPasswordField txtSenha;
    private javax.swing.JTextField txtUsuario;
    // End of variables declaration                   
    
    
    public String getValorDoTxtUsuario() {
        return txtUsuario.getText();
    }
}

Código da Segunda Tela abaixo:

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
 */
package VIEW;

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JComponent;
import javax.swing.plaf.basic.BasicMenuBarUI;
import VIEW.TelaInicialVIEW;
import DAO.CadastroDAO;
import DAO.ConexaoDAO;
import DTO.CadastroDTO;

/**
 *
 * author JC
 */
public class TelaDeFuncionarioVIEW extends javax.swing.JFrame {

    /**
     * Creates new form TelaDeFuncionarioVIEW
     */
    public TelaDeFuncionarioVIEW() {
        initComponents();
        TelaInicialVIEW objtelainicial = new TelaInicialVIEW();
        String usuario = objtelainicial.getValorDoTxtUsuario();
        lblUsuário.setText("Nome do Usuário" + usuario );
        
        
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        btRegistrar = new javax.swing.JButton();
        btClientes = new javax.swing.JButton();
        lblUsuário = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBackground(new java.awt.Color(0, 204, 204));

        btRegistrar.setText("Registrar Cliente");
        btRegistrar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btRegistrarActionPerformed(evt);
            }
        });

        btClientes.setText("Clientes");

        lblUsuário.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
        lblUsuário.setText("jLabel1");

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(62, 62, 62)
                        .addComponent(btRegistrar)
                        .addGap(18, 18, 18)
                        .addComponent(btClientes, javax.swing.GroupLayout.PREFERRED_SIZE, 130, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGap(168, 168, 168)
                        .addComponent(lblUsuário)))
                .addContainerGap(74, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(lblUsuário)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 128, Short.MAX_VALUE)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btRegistrar)
                    .addComponent(btClientes))
                .addGap(118, 118, 118))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );

        pack();
    }// </editor-fold>                        

    private void btRegistrarActionPerformed(java.awt.event.ActionEvent evt) {                                            
        // TODO add your handling code here:
        RegistrarClienteVIEW objregistrarcliente = new RegistrarClienteVIEW();
        objregistrarcliente.setVisible(true);
        dispose();
    }                                           

    /**
     * param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(TelaDeFuncionarioVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TelaDeFuncionarioVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TelaDeFuncionarioVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TelaDeFuncionarioVIEW.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TelaDeFuncionarioVIEW().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton btClientes;
    private javax.swing.JButton btRegistrar;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JLabel lblUsuário;
    // End of variables declaration                   
}

[staroski]

public TelaDeFuncionarioVIEW() {
    initComponents();
    // Na linha abaixo você está criando um novo objeto da TelaInicialVIEW,
    // não pode,
    // tem que acessar o mesmo objeto que você usou para fazer o login
    // o mais certo ainda seria obter o usuário logado a partir do seu DAO
    TelaInicialVIEW objtelainicial = new TelaInicialVIEW(); 
    String usuario = objtelainicial.getValorDoTxtUsuario();
    lblUsuário.setText("Nome do Usuário" + usuario );
}

[JCSE]

Como eu obtenho o usuário logado do meu DAO?

package DAO;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import DTO.CadastroDTO;
import javax.swing.JOptionPane;

/**
 *
 * author JC
 */
public class CadastroDAO {
    Connection conn;
    PreparedStatement pstm;
    ArrayList<CadastroDTO> lista = new ArrayList<>();
    ResultSet rs;
    
    public void cadastrarCliente(CadastroDTO objcadastrodto){
        String sql = "insert into clientes (Nome, Idade, Sexo, Telefone, Casa, Rua, Bloco) values (?, ?, ?, ?, ?, ?, ?)";
        conn = new ConexaoDAO().ConectaDB();
        
        try {
            pstm = conn.prepareStatement(sql);
            pstm.setString(1,objcadastrodto.getNome());
            pstm.setString(2, objcadastrodto.getIdade());
            pstm.setString(3, objcadastrodto.getSexo());
            pstm.setString(4, objcadastrodto.getTelefone());
            pstm.setString(5, objcadastrodto.getCasa());
            pstm.setString(6, objcadastrodto.getRua());
            pstm.setString(6, objcadastrodto.getBloco());
            pstm.execute();
            pstm.close();
        } catch (Exception erro) {
            JOptionPane.showMessageDialog(null, "ClienteDAO" + erro);
        }
    
    }
    public ResultSet FazerLogin(CadastroDTO objcadastrodto){
        conn = new ConexaoDAO().ConectaDB();       
        
        try {
            String sql = "select * from funcionários where Usuario = ? and Senha = ?";
            pstm = conn.prepareStatement(sql);
            pstm.setString(1, objcadastrodto.getLogin());
            pstm.setString(2, objcadastrodto.getSenha());
            
            ResultSet rs = pstm.executeQuery();
            return rs;
            
        } catch (Exception erro) {
            JOptionPane.showMessageDialog(null,"FazerLoginCONTADAO" + erro);
            return null;
        }
    
    }
}

Esse é meu DAO

[staroski]

@JCSE

Como eu obtenho o usuário logado do meu DAO?

Você poderia manter uma referência a ele quando faz o login.